Do you know what the BBS is ?   Sure .   Tell me then .   BBS means Bulletin Board Service .   Oh , I see , but what's it used for ?   A lot of things !   Tell me in details .   Okay . BBS , an online service , offers a wide variety of online games , files , one-on-one chat , message areas , private mail , and participate forums .   Oh , that's great . I want to try later .   Why not ? 